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我已经构建了基于 boost::asio 的应用程序。有时我会得到这种核心转储（不是常规的）。我试图调查发生了什么，但我没有更多的想法来解决它。在我看来，我认为这可能是 io 服务对象内部的一些问题 - 我的意思是可能有任何错误？我应该更新它吗？任何人都可以解释 memcpy() 在这种情况下做什么？核心的原因是什么？

更多细节：平台。太阳操作系统。提升 - 1.49

/app/bin/executor_3'executor_dumpstack+0x13 [0x426645]
/app/bin/executor_3'signal_dumpstack+0x9d [0x426625]
/lib/amd64/libc.so.1'__sighndlr+0x6 [0xfffffd7fff224ea6]
/lib/amd64/libc.so.1'call_user_handler+0x2a4 [0xfffffd7fff217b5c]
/lib/amd64/libc.so.1'memcpy+0x1929 [0xfffffd7fff18a449] [Signal 11 (SEGV)]
/opt/lib/extralibs/exe_io.so'_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmE4callINS_10shared_ptrIS2_EES5_mEEvRT_PKvRT0_RT1_+0x8b [0xfffffd7ff64ff869]
/opt/lib/extralibs/exe_io.so'_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEclINS_10shared_ptrIS2_EEEEvRT_S6_m+0x3c [0xfffffd7ff64fe47e]
/opt/lib/extralibs/exe_io.so'_ZN5boost3_bi5list3INS0_5valueINS_10shared_ptrI3GETEEEEPFNS_3argILi1EEEvEPFNS7_ILi2EEEvEEclINS_4_mfi3mf2IvS4_RKNS_6system10error_codeEmEENS0_5list2ISL_RKmEEEEvNS0_4typeIvEERT_RT0_i+0x72 [0xfffffd7ff64fce58]
/opt/lib/extralibs/exe_io.so'_ZN5boost3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENS0_5list3INS0_5valueINS_10shared_ptrIS4_EEEEPFNS_3argILi1EEEvEPFNSF_ILi2EEEvEEEEclIS6_mEEvRKT_RKT0_+0x43 [0xfffffd7ff64fbfa7]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail17read_streambuf_opINS0_19basic_stream_socketINS0_2ip3tcpENS0_21stream_socket_serviceIS5_EEEESaIcENS1_18transfer_exactly_tENS_3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENSB_5list3INSB_5valueINS_10shared_ptrISF_EEEEPFNS_3argILi1EEEvEPFNSQ_ILi2EEEvEEEEEEclESJ_mi+0x16f [0xfffffd7ff64fa31b]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail7binder2INS1_17read_streambuf_opINS0_19basic_stream_socketINS0_2ip3tcpENS0_21stream_socket_serviceIS6_EEEESaIcENS1_18transfer_exactly_tENS_3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENSC_5list3INSC_5valueINS_10shared_ptrISG_EEEEPFNS_3argILi1EEEvEPFNSR_ILi2EEEvEEEEEEESI_mEclEv+0x2d [0xfffffd7ff6503345]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio19asio_handler_invokeINS0_6detail7binder2INS2_17read_streambuf_opINS0_19basic_stream_socketINS0_2ip3tcpENS0_21stream_socket_serviceIS7_EEEESaIcENS2_18transfer_exactly_tENS_3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENSD_5list3INSD_5valueINS_10shared_ptrISH_EEEEPFNS_3argILi1EEEvEPFNSS_ILi2EEEvEEEEEEESJ_mEEEEvT_z+0x8e [0xfffffd7ff6502d76]
/opt/lib/extralibs/exe_io.so'_ZN33boost_asio_handler_invoke_helpers6invokeIN5boost4asio6detail7binder2INS3_17read_streambuf_opINS2_19basic_stream_socketINS2_2ip3tcpENS2_21stream_socket_serviceIS8_EEEESaIcENS3_18transfer_exactly_tENS1_3_bi6bind_tIvNS1_4_mfi3mf2Iv3GETRKNS1_6system10error_codeEmEENSE_5list3INSE_5valueINS1_10shared_ptrISI_EEEEPFNS1_3argILi1EEEvEPFNST_ILi2EEEvEEEEEEESK_mEES11_EEvRT_RT0_+0x3e [0xfffffd7ff650250a]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail19asio_handler_invokeINS1_7binder2INS1_17read_streambuf_opINS0_19basic_stream_socketINS0_2ip3tcpENS0_21stream_socket_serviceIS7_EEEESaIcENS1_18transfer_exactly_tENS_3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENSD_5list3INSD_5valueINS_10shared_ptrISH_EEEEPFNS_3argILi1EEEvEPFNSS_ILi2EEEvEEEEEEESJ_mEESA_SB_SC_S10_EEvRT_PNS4_IT0_T1_T2_T3_EE+0x21 [0xfffffd7ff6501f61]
/opt/lib/extralibs/exe_io.so'_ZN33boost_asio_handler_invoke_helpers6invokeIN5boost4asio6detail7binder2INS3_17read_streambuf_opINS2_19basic_stream_socketINS2_2ip3tcpENS2_21stream_socket_serviceIS8_EEEESaIcENS3_18transfer_exactly_tENS1_3_bi6bind_tIvNS1_4_mfi3mf2Iv3GETRKNS1_6system10error_codeEmEENSE_5list3INSE_5valueINS1_10shared_ptrISI_EEEEPFNS1_3argILi1EEEvEPFNST_ILi2EEEvEEEEEEESK_mEES12_EEvRT_RT0_+0x25 [0xfffffd7ff65019a3]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail23reactive_socket_recv_opINS0_17mutable_buffers_1ENS1_17read_streambuf_opINS0_19basic_stream_socketINS0_2ip3tcpENS0_21stream_socket_serviceIS7_EEEESaIcENS1_18transfer_exactly_tENS_3_bi6bind_tIvNS_4_mfi3mf2Iv3GETRKNS_6system10error_codeEmEENSD_5list3INSD_5valueINS_10shared_ptrISH_EEEEPFNS_3argILi1EEEvEPFNSS_ILi2EEEvEEEEEEEE11do_completeEPNS1_15task_io_serviceEPNS1_25task_io_service_operationESL_m+0xc4 [0xfffffd7ff65007cc]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail25task_io_service_operation8completeERNS1_15task_io_serviceERKNS_6system10error_codeEm+0x32 [0xfffffd7ff6433dc8]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail15task_io_service10do_run_oneERNS1_11scoped_lockINS1_11posix_mutexEEERNS2_11thread_infoERNS1_8op_queueINS1_25task_io_service_operationEEERKNS_6system10error_codeE+0x202 [0xfffffd7ff6433c9e]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio6detail15task_io_service3runERNS_6system10error_codeE+0xff [0xfffffd7ff6433925]
/opt/lib/extralibs/exe_io.so'_ZN5boost4asio10io_service3runEv+0x26 [0xfffffd7ff64335d6]
/opt/lib/extralibs/exe_io.so'_ZN6ZohaIO9RunIOEv+0x19 [0xfffffd7ff64335ad]
/opt/lib/extralibs/exe_io.so'_ZNK5boost4_mfi3mf0Iv6ZohaIOEclEPS2_+0x64 [0xfffffd7ff6440cee]
/opt/lib/extralibs/exe_io.so'_ZN5boost3_bi5list1INS0_5valueIP6ZohaIOEEEclINS_4_mfi3mf0IvS3_EENS0_5list0EEEvNS0_4typeIvEERT_RT0_i+0x41 [0xfffffd7ff6440c4d]
/opt/lib/extralibs/exe_io.so'_ZN5boost3_bi6bind_tIvNS_4_mfi3mf0Iv6ZohaIOEENS0_5list1INS0_5valueIPS4_EEEEEclEv+0x33 [0xfffffd7ff6440bfb]
/opt/lib/extralibs/exe_io.so'_ZN5boost6detail11thread_dataINS_3_bi6bind_tIvNS_4_mfi3mf0Iv6ZohaIOEENS2_5list1INS2_5valueIPS6_EEEEEEE3runEv+0x1c [0xfffffd7ff6440514]
/opt/csw/gxx/lib/amd64/libboost_thread.so.1.49.0'0xf655 [0xfffffd7ffa97f655]
/lib/amd64/libc.so.1'_thrp_setup+0xbc [0xfffffd7fff224b14]
/lib/amd64/libc.so.1'_lwp_start+0x0 [0xfffffd7fff224de0]

objdump 输出。

0000000000000000 <_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmE4callINS_10shared_ptrIS2_EES5_mEEvRT_PKvRT0_RT1_>:
    template<class U, class B1, class B2> R call(U & u, T const *, B1 & b1, B2 & b2) const
    {
        BOOST_MEM_FN_RETURN (u.*f_)(b1, b2);
    }

    template<class U, class B1, class B2> R call(U & u, void const *, B1 & b1, B2 & b2) const
   0:   55                      push   %rbp
   1:   48 89 e5                mov    %rsp,%rbp
   4:   53                      push   %rbx
   5:   48 83 ec 38             sub    $0x38,%rsp
   9:   48 89 7d e8             mov    %rdi,-0x18(%rbp)
   d:   48 89 75 e0             mov    %rsi,-0x20(%rbp)
  11:   48 89 55 d8             mov    %rdx,-0x28(%rbp)
  15:   48 89 4d d0             mov    %rcx,-0x30(%rbp)
  19:   4c 89 45 c8             mov    %r8,-0x38(%rbp)
    {
        BOOST_MEM_FN_RETURN (get_pointer(u)->*f_)(b1, b2);
  1d:   48 8b 45 e0             mov    -0x20(%rbp),%rax
  21:   48 89 c7                mov    %rax,%rdi
  24:   e8 00 00 00 00          callq  29 <_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmE4callINS_10shared_ptrIS2_EES5_mEEvRT_PKvRT0_RT1_+0x29>
  29:   48 89 c2                mov    %rax,%rdx
  2c:   48 8b 45 e8             mov    -0x18(%rbp),%rax
  30:   48 8b 00                mov    (%rax),%rax
  33:   83 e0 01                and    $0x1,%eax
  36:   84 c0                   test   %al,%al
  38:   74 23                   je     5d <_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmE4callINS_10shared_ptrIS2_EES5_mEEvRT_PKvRT0_RT1_+0x5d>
  3a:   48 8b 45 e8             mov    -0x18(%rbp),%rax
  3e:   48 8b 40 08             mov    0x8(%rax),%rax
  42:   48 8d 04 02             lea    (%rdx,%rax,1),%rax
  46:   48 8b 08                mov    (%rax),%rcx
  49:   48 8b 45 e8             mov    -0x18(%rbp),%rax
  4d:   48 8b 00                mov    (%rax),%rax
  50:   48 83 e8 01             sub    $0x1,%rax
  54:   48 8d 04 01             lea    (%rcx,%rax,1),%rax
  58:   48 8b 00                mov    (%rax),%rax
  5b:   eb 07                   jmp    64 <_ZNK5boost4_mfi3mf2Iv3GETRKNS_6system10error_codeEmE4callINS_10shared_ptrIS2_EES5_mEEvRT_PKvRT0_RT1_+0x64>
  5d:   48 8b 45 e8             mov    -0x18(%rbp),%rax
  61:   48 8b 00                mov    (%rax),%rax
  64:   48 8b 4d c8             mov    -0x38(%rbp),%rcx
  68:   48 8b 19                mov    (%rcx),%rbx
  6b:   48 8b 4d e8             mov    -0x18(%rbp),%rcx
  6f:   48 8b 49 08             mov    0x8(%rcx),%rcx
  73:   48 8d 3c 0a             lea    (%rdx,%rcx,1),%rdi
  77:   48 8b 4d d0             mov    -0x30(%rbp),%rcx
  7b:   48 89 da                mov    %rbx,%rdx
  7e:   48 89 ce                mov    %rcx,%rsi
4

1 回答 1

2

提示：使用c++filt实用程序，这样您的回溯将变得可读：cat backtrace | c++filt

GET 调用时async_read处理程序发生了一些事情。也许这个对象在调用处理程序时被销毁，或者参数有些混乱。没有代码不能准确地说，但是从这个回溯中可以看出带有读取回调的东西。

于 2012-11-28T13:15:52.087 回答